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Date: Wed, 1 Jun 2005 23:09:15 +0200
From: Andrea Arcangeli <andrea@suse.de>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Karim Yaghmour <karim@opersys.com>, Esben Nielsen <simlo@phys.au.dk>,
       Ingo Molnar <mingo@elte.hu>, Paulo Marques <pmarques@grupopie.com>,
       "Paul E. McKenney" <paulmck@us.ibm.com>,
       James Bruce <bruce@andrew.cmu.edu>,
       Nick Piggin <nickpiggin@yahoo.com.au>,
       "Bill Huey (hui)" <bhuey@lnxw.com>, Andi Kleen <ak@muc.de>,
       Sven-Thorsten Dietrich <sdietrich@mvista.com>, dwalker@mvista.com,
       hch@infradead.org, akpm@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: RT patch acceptance
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On Wed, Jun 01, 2005 at 10:56:07PM +0200, Thomas Gleixner wrote:
> I have no permission from the customer who actually payed the survey to
> publish the results yet. But I continue asking for it.

Ok, thanks for asking ;)

> I have a slightly outdated patch with that around on top of RT, but it
> introduces yet another level of ugliness. 
> You must carefully identify the places where you really need the
> hard_local_irq_dis/enable(). It's not hard though. 
> 
> I used it in the early days of PREEMPT_RT to identify the IRQ off
> sections and some other deadlocking scenarios. I kept this always as an
> option for adding on top of Ingos implementation to close the gap to
> "ruby".

I see.